Establishment of tropical and subtropical fruit orchard and development and use of the new potential fruit crops

Tropical and subtropical fruit orchard was established in 1992 to offer teaching and research of faculty and students. Totally, 36 families, 115 genus and more than 400 varieties, which were collected either from local or abroad, are maintained. The orchard offers material for courses of “Pomology”, “Economic fruit crops”, “Plant propagation”and “Tropical and subtropical fruit crops” and identification of plant diseases and pests. The characteristic of this orchard is mainly on tropical new and rare fruit species. The results indicated that abiu, pitaya, chempedak, star apple, Brazil cherry, white sapote and pulasan are potential new fruit crops in Taiwan. Clones with large fruit size and good quality are selected for further trial. The technology of cultural management, forcing, and tree size control of selected fruit crops were developed and demonstrated for farmer. New selected cloned or fruit crops were transferred to Kaohsiung, Taitung, and Haulien District Improvement Stations and growers for further evaluation of adaptability.

Exploitation of fruit tree for ornamentals

The fruit tree can also become beautiful ornamental plant and its economic benefits are higher than the production of the fruit itself. Most of fruit trees can be used as ornamentals, however, citrus, mytur family are better for training as bansai.

Culture and use of fruiting cactus

More than 50 varieties and lines of cactus are collected in the orchard. Culture and use of various cacti are studied and released to farmers. The normal season of pitaya in Taiwan is from June to October. Between September and March, flowering can be induced by breaking the dark period with supplemental lighting between 10:00 p.m. and 2:00a.m., allowing off-season production from November to April. The fruits produced during the cool season in Taiwan are more desired in the market than fruits from summer crops because the off-season fruits are larger and sweeter.

Selection and management of abiu

More than 400 seedlings of abiu, introduced from Philippines and Hawaii, are evaluated. Five clones with large fruit (more than 500g in average), high yield and quality are selected and will be released. The flowering behaviors and fruit growth during different seasons are studied. The quality standard and maturity index have been evaluated and recommended. The method of forcing year round production is conducting.

Selection and management of star apple

One clone with fruit weight of 300g and good quality is selected for evaluation. Fruit growth and propagation were studied.

Forcing longan for all year round production

Forcing longan flower throughout the year by application of potasiun chlorate are developed by the laboratory. This technology was transferred and released to farmers and other countries with longan production such as Australia, China, Thailand, Hawaii.

Alternate bearing is a barrier to most of longan production, which is affected by previous winter temperature for flower initiation. The temperature requirement for flower initiation of longan is between lychee and rambutan. Flower initiation in tropical area is less for warm winter, which in turn limits the distribution of longan in some warmer subtropical areas. Development of forcing flower initiation by potassium chlorate, which was first developed in Taiwan by this lab, has extended the production area and also assured the regular yield in longan in the world. Application of potassium chlorate for flower induction has changed the pruning methods for longan. Heavy pruning after harvest to control tree size and following application of potassium chlorate has been utilized practically.

Release of Lychee variety

‘Tainung No. 1, 3, 5, and 7’ lychee varieties were released with the cooperation of Dr. Jer-Way Chang, Chia-Yi Agricultural Research Station.

2002
Flower sex expression and fruit growth among papaya varieties, (Council of Agriculture)
Selection and improvement of management of new potential tropical fruit crops, (Council of Agriculture)
Forcing culture of longan
Study and survey of fruit production and marketing in Australia, (Council of Agriculture)

2001
Selection of dwarf mango (Council of Agriculture)
Selection and improvement of management of new potential tropical fruit crops, (Council of Agriculture)
Forcing culture of longan (Council of Agriculture)

2000
Transition from fruit orchard to forest and improvement of marketing in fruit crops (Council of Agriculture)
Selection and improvement of management of new potential tropical fruit crops, (Council of Agriculture)
Forcing culture of longan (Council of Agriculture)

Yen, Chung-Ruey and Pi-Chuan Liu, 2013. Selection and Prospects of new fruit crops in Taiwan, p.187~192. in “Lih-Shang Ke and Chung-Ruey Yen (ed.), Proceedings of a symposium on breeding of fruit crops in Taiwan. Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. ISBN: 978-986-03-6741-4.”

Ke, Lih-Shang and Chung-Ruey Yen (ed.), 2013. Proceedings of a symposium on breeding of fruit crops in Taiwan. 198 pages. Held on December 7, 2011, Dept. of Plant Industry, National Pingtung University of Science and Technology, ISBN 978-986-03-6741-4.”

Chu-Ying Chiou and Chung-Ruey Yen, 2013. Breeding of Indian jujube (Ziziphusmauritiana Lam.) in Taiwan, p.85-93. in “Lih-Shang Ke and Chung-Ruey Yen (ed.), Proceedings of a symposium on breeding of fruit crops in Taiwan. Dept. of Plant Industry, National Pingtung University of Science and Technology, ISBN 978-986-03-6741-4.”

Yen, Chung-Ruey and Lih Shang Ke (ed.) 2009. Proceedings of a symposium on litchi industry across strait between China and Taiwan. Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. 146 pages. ISBN 978-986-01-7846-3.

Chang, Jer Way and Chung Rey Yen, 2009. Current status and breeding of litchi in Taiwan, p.3-14, in” Yen, Chung-Ruey and Lih Shang Ke (ed.) Proceedings of a symposium on litchi industry across strait between China and Taiwan. Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. ISBN 978-986-01-7846-3”.

Ke, Lih Shang and Chung-Ruey Yen (ed.) 2009. Proceedings of a symposium on innovative development of tropical fruit crops in Taiwan. Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. 196 pages, ISBN:978-986-01-9053-3.

Liu, Pi-Chuan and Chung-Ruey Yen 2009. Research and potentials of new tropical fruit crops in Taiwan. P.59-71, in “Ke, Lih Shang and Chung-Ruey Yen (ed.) Proceedings of a symposium on innovative development of tropical fruit crops in Taiwan. Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. ISBN:978-986-01-9053-3.”

Yen, Chung-Ruey. 2008. Lychee production in the world. Proceedings of a symposium on lychee industry and development in Taiwan. Published by Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. P. 51-63.

Wang, Z. H., H. B. Chen, and Chung-Ruey Yen. 2008. Lychee production in China. Proceedings of a symposium on lychee industry and development in Taiwan. Published by Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. p. 35-50.

Chang, Jer way, Yung-Shing Teng, and Chung-Ruey Yen. 2008. Taiwan lychee breeding. Proceedings of a symposium on lychee industry and development in Taiwan. Published by Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. P. 65-78.

Ke, Li-shang and Chung-Ruey Yen (ed.). 2008. Proceedings of a symposium on lychee industry and development in Taiwan,188 pages.. Published by Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. ISBN-13:978-986-01-4514-4.

2007

Yen,Chung Ruey (ed.)2007. Proceedings of a symposium on horticulture across strait between China and Taiwan, 269 pages, Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. ISBN-13: 978-986-00-8175-4。

Yen, Chung-Ruey. 2007. Exploitation of tropical fruit resources. Symposium on potential crops. Published by Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. P.18~43.

Yen, Chung-Ruey. 2007. Exploitation and development of new fruit crops. International Horticulture Forum, Symposium on Exploitation Development of Horticulture. Published by Dept. of Horticulture, National Chung Hsing University. Taichung, Taiwan. p.237~296.

Ke, Li-shang and Chung-Ruey Yen, Chu-ying Chiou (ed.). 2007. Proceedings of a symposium on Indian jujube industry and development in Taiwan . 94 pages. Published by Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. （ISBN:978-986-00-8174-7）.

Lin, Tzong-Shyan and Chung-Ruey Yen, 2007. Fruit production in Taiwan. Proceedings of a symposium on horticulture across strait. Published by Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. p.1-6.

Li, Jian and Chung-Ruey Yen, 2007. Current development of Indian jujube in China, p.16-25. In “Ke, Lih Shang, Chung-Ruey Yen and Chu-Ying Chiou, (ed.) Proceedings of a symposium on Indian jujube industry and development in Taiwan. Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. ISBN:978-986-00-8174-7。

Yen, Chung-Ruey and Lih Shang Ke (ed.) 2006. Proceedings of a symposium on wax apple industry and development in Taiwan. 191 pages, Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. ISBN-13: 978-986-00-6842-9.

Ke, Li-shang and Chung-Ruey Yen (ed.). 2006. Proceedings of a symposium on quava industry and development in Taiwan（ISBN-13:978-986-00-6842-2）. Published by Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. 155 pages.

Liao, Yi-Chang and Chung-Ruey Yen, 2006. Pollination and breeding of wax apple in Taiwan. P.71-95, in “Yen, Chung-Ruey and Lih Shang Ke (ed.) Proceedings of a symposium on wax apple industry and development in Taiwan. Dept. of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan. ISBN-13: 978-986-00-6842-9.

Yen, Chung-Ruey. 2004. Exploitation of new fruit crops in Taiwan. International symposium on multilateral cooperation in agricultural biotechnology Exchange in Pan-Pacific area. Held at National Pingtung University of Science and Technology. Pingtung, Taiwan.

Yen, Chung-Ruey, 2002. Development of new developing tropical fruit tree of Taiwan ---selection and culture of abiu, Symposium of horticulture development across Straits, p.52-56. Xiamen, China.

Yen, Chung-Ruey. 2002. Potentiality of fruit industry in Kaoshiang and Pingtung Area, Proceedings of a symposium on research and development of subtropical crops. Kaoshiung District Agric. Improvement Station, Pingtung, Taiwan, ROC. P.131-9.